Chemistry Test ...

In the reaction, A + 2B → 6C + 2D, if the initial rate  at t = 0 is 2.6 × 10^–2 M s^–1, what will be the value of  at t = 0?

For a reaction X → Y, the rate of raction becomes twenty seven times when the concentration of X is increased three times. What is the order of the reaction ?

For a hypothetical reaction aA + bB → Product, the rate law is, rate (r) = K[A]^x[B]^y
then which of the following relation is possible–

For the chemical reaction :
A → Product
it is found that the rate of reaction increases by a factor of 6.25 when the concentration of A is increased by a factor of 2.5. The order of this reaction with respect to A is :

Consider the zero order reaction A → B. Starting with 4 moles of A in a one litre container after half an hour only one mole of A is left unreacted. The value of rate constant K for the reaction is :-

Which graph represents first order kinetics ?

A reaction where temperature is increased from 10°C to 50°C then increase in rate of reaction will be:-

A first order reaction has a specific reaction rate of 10^–2 s^–1. How much time will it take for 20 g of the reactant to reduce to 5g ?

The rate constant for the reaction

2N₂O₅ → 4NO₂ + O₂ is 3 × 10^–5 sec^–1.

If the rate is 2.40 × 10^–5 mol litre^–1 sec^–1. Then the concentration of N₂O₅ (in mol litre^–1) is :-

A hypothetical reaction A₂ + B₂ → 2AB follow the mechanism as given below 

A₂ ⇌ A + A ( fast) 
A + B₂ → AB + B (slow)
A + B → AB (fast)

The order of the over all reaction by rate determining step method is:-